To respond to the question, I haven't seen any compelling reason to believe he is using anything. I know there are a lot of guys that agree you and would certainly be motivated with just 1/20th of that guaranteed amount. One thing I noted in an article was Pacquiao's reaction he was that he was really pissed off and at that time he responded with the Law Suit. So while I totally agree that he should have just taken the random testing, I can also understand why he didn't give in fully to the demand.